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Synonym
Tumor Necrosis Factor; Cachectin; TNF-Alpha; Tumor Necrosis Factor Ligand Superfamily Member 2; TNF-a; TNF; TNFA; TNFSF2
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Activity
Measured in a cytotoxicity assay using L‑929 mouse fibroblast cells in the presence of the metabolic inhibitor actinomycin D. The ED50 for this effect is typically 0.3 ng/mL.
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Sequence
NA
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Fusion tag
NA
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Accession
P01375
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Expressed Host
E.coli
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Shipping
The product is shipped at ambient temperature.Upon receipt, store it immediately at the temperature listed below.
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Purity
＞95% as determined by reducing SDS-PAGE.
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Endotoxin
＜1.0 EU per µg as determined by LAL test.
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Stability and Storage
Lyophilized protein should be stored at < -20℃, though stable at room temperature for 3 weeks.Reconstituted protein solution can be stored at 4-7℃ for 2-7 days.Aliquots of reconstituted samples are stable at < -20℃ for 3 months
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Mol Mass
16.9 kDa
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AP Mol Mass
15-17 kDa
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Formulation
Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.4.
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Reconstitution
Please refer to it for detailed information.
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Background
Tumor Necrosis Factor-α (TNF-α) is secreted by macrophages, monocytes, neutrophils, T-cells, and NK-cells following stimulation by bacterial LPS. Cells expressing CD4 secrete TNF-α while cells that express CD8 secrete little or no TNF-α. Synthesis of TNF-α can be induced by many different stimuli including interferons, IL2, and GM-CSF. The clinical use of the potent anti-tumor activity of TNF-α has been limited by the proinflammatory side effects such as fever, dose-limiting hypotension, hepatotoxicity, intravascular thrombosis, and hemorrhage. Designing clinically applicable TNF-α mutants with low systemic toxicity has been of intense pharmacological interest. Human TNF-α that binds to murine TNF-R55 but not murine TNF-R7, exhibits retained anti-tumor activity and reduced systemic toxicity in mice compared with murine TNF-α, which binds to both murine TNF receptors. Based on these results, many TNF-α mutants that selectively bind to TNF-R55 have been designed. These mutants displayed cytotoxic activities on tumor cell lines in vitro and have exhibited lower systemic toxicity in vivo. Recombinant Human TNF-α High Active Mutant differs from the wild-type by amino acid subsitution of amino acids 1-7 with Arg8, Lys9, Arg10 and Phe157. This mutant form has been shown to have increased activity with less inflammatory side effects in vivo.
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Description
Aplha, transcription related growth factors and stimulating factors or repressing nuclear factors are complex subunits of proteins involved in cell differentiation. Complex subunit associated factors are involved in hybridoma growth, Eosinohils, eritroid proliferation and derived from promotor binding stimulating subunits on the DNA binding complex. NFKB 105 subunit for example is a polypetide gene enhancer of genes in B cells.
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Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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Source
Recombinants or rec. proteins
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Group
recombinants
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Gene
Tumor necrosis factor (TNFa, tumor necrosis factor alpha, TNFα, cachexin, or cachectin) is a cell signaling protein (cytokine) involved in systemic inflammation and is one of the cytokines that make up the acute phase reaction. It is produced chiefly by activated macrophages, although it can be produced by many other cell types such as CD4+ lymphocytes, NK cells, neutrophils, mast cells, eosinophils, and neurons. TNFb or TNF beta also bin on TNF receptors for Th1 activation.
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Gene target
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Gene symbol
TNF, TNFRSF1A, TNFRSF1B, LTBR
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Short name
Recombinant Tumor Necrosis Factor-α/TNF-α Active Mutant Protein 50µg
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Technique
Recombinant, E. coli recombinant proteins are genetic recombinations in Escherichia coli, supplied as white sterile powder lyopillized. Elabscience advises they will be reconstituted in a buffer soluion or culture medium for cell culture.
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Species
Human, Humans
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Alternative name
Rec. H. sapiens Tumor Necrosis Factor-α/tumor necrosis factor-α High functionnal Mutant Protein 50µg
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Alternative technique
rec
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Alternative to gene target
tumor necrosis factor, DIF and TNF-alpha and TNFA and TNFSF2, TNF and IDBG-300259 and ENSG00000232810 and 7124, transcription regulatory region DNA binding, Extracellular, Tnf and IDBG-177358 and ENSMUSG00000024401 and 21926, TNF and IDBG-634161 and ENSBTAG00000025471 and 280943
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Tissue
tumor
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